Then you get this:

    ffmpeg -i input.mp4 -ss 20 -map 0 -c:v libaom-av1 -b:v 1M -c:a libopus -map -0:s -y output.mp4

I'm kind of surprised it got this many things wrong to be honest.

Kudos for taking this seriously.

I have no idea what prompt you fed it, but at least personally, I rarely get such poor results for ffmpeg.

But assuming I got this back, instead of running it blind, I wold check the options it suggested, find the flaws, fix them and then run it. Quite possibly still faster than it would take to construct by hand from scratch.

In that sense, LLMs are better search engines than existing search engines in terms of guiding you to the right neighborhood, if not the correct house.

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When people criticize YOLO vibe coding, I think they're forgetting all the ways LLMs can still be very useful with a human in the loop.